US large caliber automatic pistol round
| .44 AMP |
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 A .44 Auto Magnum Pistol cartridge (left), next to a .44 Remington Magnum cartridge (right) |
| Type | Pistol |
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| Place of origin | United States |
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| Production history |
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| Designed | 1971 |
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| Manufacturer | Auto Mag Corporation |
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| Produced | 1971–1982
2017–present |
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| Specifications |
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| Parent case | .30-06 Springfield[1] |
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| Case type | Rimless, straight |
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| Bullet diameter | .429 in (10.9 mm) |
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| Neck diameter | .457 in (11.6 mm) |
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| Base diameter | .470 in (11.9 mm) |
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| Rim diameter | .470 in (11.9 mm) |
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| Case length | 1.298 in (33.0 mm) |
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| Overall length | 1.6 in (41 mm) |
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| Case capacity | 28.5 gr H2O (1.85 cm3) |
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| Primer type | Large pistol |
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The .44 Auto Magnum Pistol (AMP) is a large-caliber, semi-automatic pistol cartridge developed in 1971 by Harry Sanford.[2] The primary use is in the Auto Mag Pistol.[3] The cartridge was also employed in the Wildey automatic pistol, including a few other custom pistols.[4] While factory loads are manufactured, cases can be made by cutting down and reaming out .308 Winchester or .30-06 Springfield brass,[5] with ballistic performance similar to the .44 Magnum revolver cartridge.[3]
The .44 AMP was discontinued in 1982 after eleven years before being brought back sometime later in 2017, continuing current production to the present time.
See also
References
- ^ John J. Donnelly (2011). The Handloader's Manual of Cartridge Conversions. Skyhorse. ISBN 978-1616082383.
- ^ Chris Eger. "Dirty Harry & Mack Bolan's Big Thunder: The Auto Mag Pistol in .44 AMP".
- ^ a b Long, Duncan (1995). Hand Cannons: The World's Most Powerful Handguns. Boulder, Colorado: Paladin Press. ISBN 0873648099.
- ^ Wildey Guns - The Wildey Archived October 5, 2016, at the Wayback Machine, Retrieved January 16, 2016.
- ^ ".44 Auto Mag Ammunition Information (Company Literature)" (PDF). Pasadena, California.
Cartridges derived from the .30-03 Springfield
| Prototype | |
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| First generation | | Based on .30-03 Springfield | |
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| Second generation | | Based on .30-06 Springfield | |
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| Third generation | |
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| Fourth generation | |
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| Fifth generation | |
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| Sixth generation | | Based on .243 Winchester | |
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| Based on .307 Winchester | |
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| Based on .308×1.5-inch Barnes | |
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| Seventh generation | | Based on 6mm BR | |
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| Based on .22 BR | |
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| Eighth generation | |
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| Related | |
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